abscising
v. C1 Advanced ab·scis·ing
v. to fall off a plant naturally, like leaves in autumn. It can also mean to remove something by cutting or pulling it away.
v. to shed or fall off naturally, as leaves from a plant; to remove by cutting or pulling away. Often used in botanical contexts to describe the shedding of leaves or fruits.
The tree is abscising its leaves as the weather gets colder.
The gardener had to abscise the diseased branches to prevent the infection from spreading to the rest of the tree.
As the plant enters dormancy, it begins abscising its outer layers to conserve energy and protect the core from the harsh winter conditions.